Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/40-17 | 275/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.66 (651.8) | 26.74 (679.3) | 1.08 (27.5) 4.2% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 80.62 (2047.69) | 84.02 (2134.08) | 3.4 (86.39) 4.2% |
| Sidewall Height inches (mm) | 4.33 (110) | 4.87 (123.75) | 0.54 (13.75) 12.5% |
| Revolutions per mile (km) | 785.93 (488.35) | 754.11 (468.58) | -31.82 (-19.77) -4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.84 mph (33.54 km/h) |
| 25 mph (40.23 km/h) | 26.05 mph (41.93 km/h) |
| 30 mph (48.28 km/h) | 31.27 mph (50.32 km/h) |
| 35 mph (56.33 km/h) | 36.48 mph (58.7 km/h) |
| 40 mph (64.37 km/h) | 41.69 mph (67.09 km/h) |
| 45 mph (72.42 km/h) | 46.9 mph (75.48 km/h) |
| 50 mph (80.47 km/h) | 52.11 mph (83.86 km/h) |
| 55 mph (88.51 km/h) | 57.32 mph (92.25 km/h) |
| 60 mph (96.56 km/h) | 62.53 mph (100.63 km/h) |
| 65 mph (104.61 km/h) | 67.74 mph (109.02 km/h) |
| 70 mph (112.65 km/h) | 72.95 mph (117.41 km/h) |
| 75 mph (120.7 km/h) | 78.16 mph (125.79 km/h) |
| 80 mph (128.75 km/h) | 83.38 mph (134.18 km/h) |
| 85 mph (136.79 km/h) | 88.59 mph (142.57 km/h) |
| 90 mph (144.84 km/h) | 93.8 mph (150.95 km/h) |
| 95 mph (152.89 km/h) | 99.01 mph (159.34 km/h) |
| 100 mph (160.93 km/h) | 104.22 mph (167.72 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1919 | 2229 | 2401 | 2507 | 2621 | 2703 | 2793 | 2899 | 3046 | 3193 | 3356 | 3487 | 3724 | 3985 | 4189 | 4320 | 4393 | 4663 | 5039 | 5855 |
Better Fuel Economy Factory Ratios Increased Power
